Mambo dance was developed in Cuba by Perez Prado. In the 1940's, he brought his music and the Mambo dance to Mexico. The music was widely accepted because it gave a freedom of movement in interrupting the music. The original Mambo is still taught in dance studios in Cuba and Mexico City.
When the Mambo came to New York, the original dance was rejected by American dance teachers and changed into what is now known as Salsa. American teachers called the original dance, "extreme" and "undisciplined" and added breaking steps so it could be a saleable commodity for social dancing. The changes they made can't even be danced to the original Mambo music.
The Cuban Mambo is one of the most beautiful free forms of dance. At social dances, one may enter the dance floor with a partner but the dancing may be evolve into dancing alone or with another partner. The Cuban people naturally put the music inside of them and let it come out in the freedom of movement.
Video below is of 2 little kids dancing the American accepted version of Mambo.